ABSTRACT
@#Hand-foot-mouth disease(HFMD) is an infectious disease that seriously affects the health of infants and young children and has become a major public health problem worldwide,especially in the Asia-Pacific region.HFMD can be caused by a variety of enteroviruses,the most common being enterovirus 71(EV71) and Coxsackievirus A16(CVA16).In recent years,with the significant increase of HFMD caused by Coxsackievirus A6(CVA6) infection,CVA6 has gradually become the main pathogen of HFMD in many countries and regions around the world.CVA6 is not only susceptible to children,but also infects adults with normal immune function.The paper reviewed the CVA6 related etiology,epidemiology,clinical symptoms,laboratory diagnosis and development of vaccine.
ABSTRACT
@#ObjectiveTo establish the national reference panel for coxsackievirus A16(CA16)nucleic acid detection kit and related quality standard.MethodsThe CA16 positive and negative samples were collected and screened,and then were filled and lyophilized to establish the national reference panel for CA16 nucleic acid detection kit. According to the cooperative calibration results of various reagent manufacturers,the quality standard of reference panel was determined.Meanwhile,the homogeneity and stability of the national reference panel were well studied.ResultsThe national reference panel of CA16 nucleic acid detection kit consisted of 9 positive samples,8 negative samples,1 limit-detecting sample and1 precision sample. The quality standard was as follows:the coincidence rate of positive samples was no less than 8/9;The coincidence rate of negative samples was 8/8;The minimum detection limit required that the dilution of limit-detecting sample was no less than 1∶103;The precision required that the coefficient of variation(CV)of Ct value of 10 precision samples diluted 100 times was no higher than 5% and the results were all positive. The homogeneity of the reference panel met the requirement,and the stability was not affected by the storage at room temperature(25 ℃)for 24 hours and repeated freezing and thawing three times.ConclusionThe first national reference panel of CA16 nucleic acid detection kit and the related quality standard have been established,which provided a reference for the quality control and evaluation of the related reagents.